Shingen was one of my favorites because of his personality. xD I didn't really do well with Rhyperior though. And Yukimura, his aide with the Emboar line, was one of my favorites too. Yoshihiro with his Gurdurr was pretty boss, and Ginchiyo with her Luxray was pretty cool too.

And for my least favorite, Yoshimoto with his Pineco. I didn't like him not only because I couldn't recruit him forever, but he was just overall annoying. -_-

The only three warlords I ever really used (in the first storyline, just started extra stories) were Kenshin, Shingen, and Ginchiyo, and I never really liked any of them. Well I didn't dislike them, but they never struck me as having an interesting personality. So, for my favorite... Masamune? For having an awesome eyepatch?